Note

This was all done by Chris, I cannot take any credit for this.

As we all know, the first step to getting more power out of virtually any engine is to improve the induction system. This is usually  done with the aid of a performance air filter. You can either replace the OE panel filter or go for a cone type, either way, the engine  tends to be able to 'breath' better. Most people seem to 'ditch' the original air box assembly and go for the bolt-on cone type filter and is the option that I took with my 220. However, just bolting on a filter isn't as simple as that, especially on a turbocharged car.  The one thing that is needed as well as a good airflow, is cold air - and lots of it.

Due to the mechanics of a turbo, there is quite a  build up of heat under the bonnet and most of this heat is sucked into the air intake. Hot air equals loss of performance. A lack of  space under the bonnet of the 220 meant that the bolt on filter was located in close proximity to the exhaust manifold and turbo. Not  good for performance, especially in summer with ambient temperatures reaching the mid 20s. I needed to be able to move the filter as far away from the source of heat as possible.

 

In order to be able to fit my new Blitz Air filter and cold air box under the bonnet, I had to move the battery to the boot to make room.

In theory this is quite an easy mod.

1. Bolt the tray in the boot

2. Run either 4 gauge or 0 gauge power wire from the engine bay to the boot

3. Connect the power wire to the distribution block, along with the wire from the starter motor, wiring loom & the fuse box.

4. Ground the battery in to boot

5. Make a breather hole for the breather pipe from the battery

6. Ground the gearbox and engine to the chassis some where under the bonnet

7. Put key in ignition and turn......hey presto all works